Home / 13,947.20-20,877.60-8,086.40

Finding the Fourth Proportional to 13,947.20, 20,877.60 and 8,086.40

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Solution

The fourth proportional to 13,947.20, 20,877.60 and 8,086.40 is: 12,104.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.20 : 20,877.60 = 8,086.40 : x
  2. Step 2: Convert to fraction form
    13,947.20/20,877.60 = 8,086.40/x
  3. Step 3: Cross multiply
    13,947.20x = 20,877.60 × 8,086.40
  4. Step 4: Simplify right side
    13,947.20x = 168,824,624.64
  5. Step 5: Solve for x
    x = 168,824,624.64/13,947.20
  6. Step 6: Final answer
    x = 12,104.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.